scroll-behavior

The scroll-behavior CSS property specifies the scrolling behavior for a scrolling box, when scrolling happens due to navigation or CSSOM scrolling APIs. Any other scrolls, e.g. those that are performed by the user, are not affected by this property. When this property is specified on the root element, it applies to the viewport instead.

User agents may ignore this property.

Initial value	auto
Applies to	scrolling boxes
Inherited	no
Media	visual
Computed value	as specified
Animation type	discrete
Canonical order	the unique non-ambiguous order defined by the formal grammar

Syntax

/* Keyword values */
scroll-behavior: auto;
scroll-behavior: smooth;

/* Global values */
scroll-behavior: inherit;
scroll-behavior: initial;
scroll-behavior: unset;

Values

auto

The scrolling box is scrolled in an instant fashion.

smooth

The scrolling box is scrolled in a smooth fashion using a user-agent-defined timing function over a user-agent-defined period of time. User agents should follow platform conventions, if any.

Formal syntax

auto | smooth

Example

HTML

<nav>
  <a href="#page-1">1</a>
  <a href="#page-2">2</a>
  <a href="#page-3">3</a>
</nav>
<scroll-container>
  <scroll-page id="page-1">1</scroll-page>
  <scroll-page id="page-2">2</scroll-page>
  <scroll-page id="page-3">3</scroll-page>
</scroll-container>

CSS

a {
  display: inline-block;
  width: 50px;
  text-decoration: none;
}
nav, scroll-container {
  display: block;
  margin: 0 auto;
  text-align: center;
}
nav {
  width: 339px;
  padding: 5px;
  border: 1px solid black;
}
scroll-container {
  display: block;
  width: 350px;
  height: 200px;
  overflow-y: scroll;
  scroll-behavior: smooth;
}
scroll-page {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  font-size: 5em;
}

Output

Specifications

Specification	Status	Comment
CSS Object Model (CSSOM) View Module The definition of 'scroll-behavior' in that specification.	Working Draft	Initial specification

Browser compatibility

[1] Supported in Chrome and Opera by enabling the "Smooth Scrolling" or "Enable experimental web platform features" flag.